RLCraft will bring a server to its knees on entity count long before it runs out of memory. That changes what you should buy, so it is worth two minutes before you pick a plan.
Minecraft plans are priced per GB, so you pay for the memory you actually need.
A small private world for two or three players.
4GB at $0.85/GB
What most RLCraft groups settle on.
6GB at $2.00/GB
More headroom and a bigger disk allowance as the server grows.
8GB at $2.75/GB
RLCraft's own feature list leads with Lycanite's Mobs, Ice and Fire dragons and Infernal Mobs. A populated world therefore carries a lot of entities, and that is the part that hurts. Minecraft runs one game loop: entities, block entities and world ticking all advance on a single thread, twenty times a second. Adding cores does not shorten a tick. A faster core does.
Here is the honest version, including the part that does not flatter us. Supreme and Ultimate run on Ryzen 7 7700 or equivalent, high-clock Zen 4, which is the right part for this pack. Budget runs on an EPYC 7451, a 2017 Zen 1 chip. It is cheaper for a reason, and on an entity-heavy pack we would not put more than two or three players on it. Most hosts publish no CPU at all, so you cannot tell which of the two you are being sold.
If a server is already stuttering, find out where the time goes before buying more of anything. Our guide on telling CPU, RAM, ping and mod lag apart walks through it.
Most figures online are not what they look like. Shivaxi's guidance on the RLCraft download page, "the default 1GB of RAM that is allocated is NOT enough. Recommend allocating 3 to 4GB's of RAM", is about the client and is set in the launcher. It is not a dedicated-server figure, and there is no official server RAM number published for RLCraft at all.
So we will give you ours instead of dressing someone else's up. 4GB runs a small private world. 6GB is comfortable once a handful of people are on. Past that it depends more on what your players build than on the pack. Our modded sizing guide sets out the reasoning, and moving between plans does not mean rebuilding the server if you guess low.
One catch worth knowing: on a 1.12.2 pack, more memory is not automatically better. A larger heap gives the garbage collector more to sweep, and what you feel is a longer pause rather than a smoother game. A server booting well below its allocation is also normal, which we explain in why an 8GB modpack boots at 6GB.
Your server address is issued as soon as the server is set up, and there is no port forwarding to do. Everyone joining needs RLCraft installed on their own machine through CurseForge or Prism, and they need the same pack version you are running, otherwise they will be rejected at the door. Shivaxi's client-side advice about 3 to 4GB applies to them, not to you.
RLCraft installs from the modpack list in the panel. If you are moving a world across from somewhere else, or running a build that is not listed, installing a custom or unlisted modpack covers it. Every plan has full SFTP, so the world is yours to upload or take away whenever you want, and backups run on their own.
Running a kitchen-sink pack instead? See All the Mods 10 hosting, or the mods and modpacks guides.
There is no official server figure from the pack author. The widely quoted 3 to 4GB is his client-side recommendation. On our own sizing, 4GB suits a small private world and 6GB is comfortable with a handful of players. On a 1.12.2 pack, over-allocating tends to produce longer garbage-collection pauses rather than better performance.
Minecraft 1.12.2 on Forge.
Because the limit is CPU, not memory. RLCraft leans on Lycanite's Mobs, Ice and Fire and Infernal Mobs, so a lived-in world carries a lot of entities, and Minecraft ticks them on one thread. A faster core helps. More cores and more RAM do not.
Supreme at 6GB is what most groups settle on, because it runs on Ryzen 7 7700 class hardware. Budget is cheaper but runs on a 2017 EPYC 7451, which we would keep to two or three players on a pack this entity-heavy.
Yes. Every plan includes full SFTP access, so you can upload a world or download it at any time. Automatic backups are included.